mirror of
https://github.com/IRBorisov/ConceptPortal.git
synced 2025-08-14 04:40:36 +03:00
377 lines
16 KiB
Python
377 lines
16 KiB
Python
''' Models: Change propagation engine. '''
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from typing import Optional
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from rest_framework.serializers import ValidationError
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from apps.rsform.models import INSERT_LAST, Association, Constituenta, CstType, RSFormCached
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from .Inheritance import Inheritance
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from .Operation import Operation
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from .OssCache import OssCache
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from .Substitution import Substitution
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from .utils import (
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CstMapping,
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CstSubstitution,
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create_dependant_mapping,
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cst_mapping_to_alias,
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map_cst_update_data
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)
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class PropagationEngine:
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''' OSS changes propagation engine. '''
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def __init__(self, cache: OssCache):
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self.cache = cache
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def on_change_cst_type(self, operation_id: int, cst_id: int, ctype: CstType) -> None:
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''' Trigger cascade resolutions when Constituenta type is changed. '''
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children = self.cache.extend_graph.outputs[operation_id]
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if not children:
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return
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self.cache.ensure_loaded_subs()
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for child_id in children:
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child_operation = self.cache.operation_by_id[child_id]
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successor_id = self.cache.get_inheritor(cst_id, child_id)
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if successor_id is None:
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continue
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child_schema = self.cache.get_schema(child_operation)
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if child_schema is None:
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continue
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if child_schema.change_cst_type(successor_id, ctype):
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self.on_change_cst_type(child_id, successor_id, ctype)
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# pylint: disable=too-many-arguments, too-many-positional-arguments
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def on_inherit_cst(
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self,
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target_operation: int,
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source: RSFormCached,
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items: list[Constituenta],
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mapping: CstMapping,
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exclude: Optional[list[int]] = None
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) -> None:
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''' Trigger cascade resolutions when Constituenta is inherited. '''
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children = self.cache.extend_graph.outputs[target_operation]
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if not children:
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return
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for child_id in children:
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if not exclude or child_id not in exclude:
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self.inherit_cst(child_id, source, items, mapping)
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def inherit_cst(
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self,
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target_operation: int,
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source: RSFormCached,
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items: list[Constituenta],
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mapping: CstMapping
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) -> None:
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''' Execute inheritance of Constituenta. '''
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operation = self.cache.operation_by_id[target_operation]
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destination = self.cache.get_schema(operation)
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if destination is None:
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return
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self.cache.ensure_loaded_subs()
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new_mapping = self._transform_mapping(mapping, operation, destination)
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alias_mapping = cst_mapping_to_alias(new_mapping)
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insert_where = self._determine_insert_position(items[0].pk, operation, source, destination)
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new_cst_list = destination.insert_copy(items, insert_where, alias_mapping)
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for index, cst in enumerate(new_cst_list):
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new_inheritance = Inheritance.objects.create(
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operation=operation,
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child=cst,
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parent=items[index]
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)
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self.cache.insert_inheritance(new_inheritance)
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new_mapping = {alias_mapping[alias]: cst for alias, cst in new_mapping.items()}
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self.on_inherit_cst(operation.pk, destination, new_cst_list, new_mapping)
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# pylint: disable=too-many-arguments, too-many-positional-arguments
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def on_update_cst(
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self,
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operation: int,
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cst_id: int,
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data: dict, old_data: dict,
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mapping: CstMapping
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) -> None:
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''' Trigger cascade resolutions when Constituenta data is changed. '''
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children = self.cache.extend_graph.outputs[operation]
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if not children:
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return
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self.cache.ensure_loaded_subs()
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for child_id in children:
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child_operation = self.cache.operation_by_id[child_id]
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successor_id = self.cache.get_inheritor(cst_id, child_id)
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if successor_id is None:
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continue
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child_schema = self.cache.get_schema(child_operation)
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assert child_schema is not None
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new_mapping = self._transform_mapping(mapping, child_operation, child_schema)
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alias_mapping = cst_mapping_to_alias(new_mapping)
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successor = child_schema.cache.by_id.get(successor_id)
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if successor is None:
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continue
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new_data = map_cst_update_data(successor, data, old_data, alias_mapping)
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if not new_data:
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continue
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new_old_data = child_schema.update_cst(successor.pk, new_data)
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if not new_old_data:
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continue
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new_mapping = {alias_mapping[alias]: cst for alias, cst in new_mapping.items()}
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self.on_update_cst(
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operation=child_id,
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cst_id=successor_id,
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data=new_data,
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old_data=new_old_data,
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mapping=new_mapping
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)
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def on_inherit_association(self, operationID: int,
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items: list[Association],
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exclude: Optional[list[int]] = None) -> None:
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''' Trigger cascade resolutions when association is inherited. '''
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children = self.cache.extend_graph.outputs[operationID]
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if not children:
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return
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for child_id in children:
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if not exclude or child_id not in exclude:
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self.inherit_association(child_id, items)
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def inherit_association(self, target: int, items: list[Association]) -> None:
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''' Execute inheritance of Associations. '''
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operation = self.cache.operation_by_id[target]
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if operation.result is None:
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return
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self.cache.ensure_loaded_subs()
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new_associations: list[Association] = []
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for assoc in items:
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new_container = self.cache.get_inheritor(assoc.container_id, target)
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new_associate = self.cache.get_inheritor(assoc.associate_id, target)
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if new_container is None or new_associate is None:
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continue
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new_associations.append(Association(
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container_id=new_container,
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associate_id=new_associate
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))
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if new_associations:
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new_associations = Association.objects.bulk_create(new_associations)
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self.on_inherit_association(target, new_associations)
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def on_before_substitute(self, operationID: int, substitutions: CstSubstitution) -> None:
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''' Trigger cascade resolutions when Constituenta substitution is executed. '''
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children = self.cache.extend_graph.outputs[operationID]
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if not children:
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return
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self.cache.ensure_loaded_subs()
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for child_id in children:
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child_operation = self.cache.operation_by_id[child_id]
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child_schema = self.cache.get_schema(child_operation)
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if child_schema is None:
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continue
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new_substitutions = self._transform_substitutions(substitutions, child_id, child_schema)
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if not new_substitutions:
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continue
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self.on_before_substitute(child_operation.pk, new_substitutions)
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child_schema.substitute(new_substitutions)
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def on_delete_association(self, operationID: int, associations: list[Association]) -> None:
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''' Trigger cascade resolutions when association is deleted. '''
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children = self.cache.extend_graph.outputs[operationID]
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if not children:
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return
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self.cache.ensure_loaded_subs()
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for child_id in children:
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child_operation = self.cache.operation_by_id[child_id]
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child_schema = self.cache.get_schema(child_operation)
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if child_schema is None:
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continue
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deleted: list[Association] = []
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for assoc in associations:
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new_container = self.cache.get_inheritor(assoc.container_id, child_id)
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new_associate = self.cache.get_inheritor(assoc.associate_id, child_id)
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if new_container is None or new_associate is None:
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continue
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deleted_assoc = Association.objects.filter(
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container=new_container,
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associate=new_associate
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)
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if deleted_assoc.exists():
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deleted.append(deleted_assoc[0])
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if deleted:
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self.on_delete_association(child_id, deleted)
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Association.objects.filter(pk__in=[assoc.pk for assoc in deleted]).delete()
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def on_delete_inherited(self, operation: int, target: list[int]) -> None:
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''' Trigger cascade resolutions when Constituenta inheritance is deleted. '''
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children = self.cache.extend_graph.outputs[operation]
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if not children:
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return
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self.cache.ensure_loaded_subs()
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for child_id in children:
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self.delete_inherited(child_id, target)
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def delete_inherited(self, operation_id: int, parent_ids: list[int]) -> None:
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''' Execute deletion of Constituenta inheritance. '''
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operation = self.cache.operation_by_id[operation_id]
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schema = self.cache.get_schema(operation)
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if schema is None:
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return
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self.undo_substitutions_cst(parent_ids, operation, schema)
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target_ids = self.cache.get_inheritors_list(parent_ids, operation_id)
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self.on_delete_inherited(operation_id, target_ids)
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if target_ids:
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self.cache.remove_cst(operation_id, target_ids)
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schema.delete_cst(target_ids)
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def undo_substitutions_cst(self, target_ids: list[int], operation: Operation, schema: RSFormCached) -> None:
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''' Undo substitutions for Constituents. '''
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to_process = []
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for sub in self.cache.substitutions[operation.pk]:
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if sub.original_id in target_ids or sub.substitution_id in target_ids:
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to_process.append(sub)
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for sub in to_process:
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self.undo_substitution(schema, sub, target_ids)
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def undo_substitution(
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self,
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schema: RSFormCached,
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target: Substitution,
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ignore_parents: Optional[list[int]] = None
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) -> None:
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''' Undo target substitution. '''
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if ignore_parents is None:
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ignore_parents = []
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operation_id = target.operation_id
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original_schema = self.cache.get_schema_by_id(target.original.schema_id)
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dependant = []
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for cst_id in original_schema.get_dependant([target.original_id]):
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if cst_id not in ignore_parents:
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inheritor_id = self.cache.get_inheritor(cst_id, operation_id)
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if inheritor_id is not None:
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dependant.append(inheritor_id)
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self.cache.substitutions[operation_id].remove(target)
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target.delete()
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new_original: Optional[Constituenta] = None
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if target.original_id not in ignore_parents:
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full_cst = Constituenta.objects.get(pk=target.original_id)
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cst_mapping = create_dependant_mapping(original_schema, [full_cst])
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self.inherit_cst(operation_id, original_schema, [full_cst], cst_mapping)
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new_original_id = self.cache.get_inheritor(target.original_id, operation_id)
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assert new_original_id is not None
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new_original = schema.cache.by_id[new_original_id]
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if dependant:
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substitution_id = self.cache.get_inheritor(target.substitution_id, operation_id)
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assert substitution_id is not None
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substitution_inheritor = schema.cache.by_id[substitution_id]
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mapping = {substitution_inheritor.alias: new_original}
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self._on_partial_mapping(mapping, dependant, operation_id, schema)
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def _determine_insert_position(
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self, prototype_id: int,
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operation: Operation,
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source: RSFormCached,
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destination: RSFormCached
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) -> int:
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''' Determine insert_after for new constituenta. '''
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prototype = source.cache.by_id[prototype_id]
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prototype_index = source.cache.constituents.index(prototype)
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if prototype_index == 0:
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return 0
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prev_cst = source.cache.constituents[prototype_index - 1]
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inherited_prev_id = self.cache.get_successor(prev_cst.pk, operation.pk)
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if inherited_prev_id is None:
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return INSERT_LAST
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prev_cst = destination.cache.by_id[inherited_prev_id]
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prev_index = destination.cache.constituents.index(prev_cst)
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return prev_index + 1
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def _transform_mapping(self, mapping: CstMapping, operation: Operation, schema: RSFormCached) -> CstMapping:
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if not mapping:
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return mapping
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result: CstMapping = {}
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for alias, cst in mapping.items():
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if cst is None:
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result[alias] = None
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continue
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successor_id = self.cache.get_successor(cst.pk, operation.pk)
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if successor_id is None:
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continue
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successor = schema.cache.by_id.get(successor_id)
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if successor is None:
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continue
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result[alias] = successor
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return result
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def _transform_substitutions(
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self,
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target: CstSubstitution,
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operation: int,
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schema: RSFormCached
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) -> CstSubstitution:
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result: CstSubstitution = []
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for current_sub in target:
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sub_replaced = False
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new_substitution_id = self.cache.get_inheritor(current_sub[1].pk, operation)
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if new_substitution_id is None:
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for sub in self.cache.substitutions[operation]:
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if sub.original_id == current_sub[1].pk:
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sub_replaced = True
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new_substitution_id = self.cache.get_inheritor(sub.original_id, operation)
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break
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new_original_id = self.cache.get_inheritor(current_sub[0].pk, operation)
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original_replaced = False
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if new_original_id is None:
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for sub in self.cache.substitutions[operation]:
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if sub.original_id == current_sub[0].pk:
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original_replaced = True
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sub.original_id = current_sub[1].pk
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sub.save()
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new_original_id = new_substitution_id
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new_substitution_id = self.cache.get_inheritor(sub.substitution_id, operation)
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break
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if sub_replaced and original_replaced:
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raise ValidationError({'propagation': 'Substitution breaks OSS substitutions.'})
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for sub in self.cache.substitutions[operation]:
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if sub.substitution_id == current_sub[0].pk:
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sub.substitution_id = current_sub[1].pk
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sub.save()
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if new_original_id is not None and new_substitution_id is not None:
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result.append((schema.cache.by_id[new_original_id], schema.cache.by_id[new_substitution_id]))
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return result
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def _on_partial_mapping(
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self,
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mapping: CstMapping,
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target: list[int],
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operation: int,
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schema: RSFormCached
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) -> None:
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''' Trigger cascade resolutions when Constituents are partially mapped. '''
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alias_mapping = cst_mapping_to_alias(mapping)
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schema.apply_partial_mapping(alias_mapping, target)
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children = self.cache.extend_graph.outputs[operation]
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if not children:
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return
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self.cache.ensure_loaded_subs()
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for child_id in children:
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child_operation = self.cache.operation_by_id[child_id]
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child_schema = self.cache.get_schema(child_operation)
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if child_schema is None:
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continue
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new_mapping = self._transform_mapping(mapping, child_operation, child_schema)
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if not new_mapping:
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continue
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new_target = self.cache.get_inheritors_list(target, child_id)
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if not new_target:
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continue
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self._on_partial_mapping(new_mapping, new_target, child_id, child_schema)
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